./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:22:15,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:22:15,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:22:15,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:22:15,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:22:15,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:22:15,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:22:15,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:22:15,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:22:15,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:22:15,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:22:15,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:22:15,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:22:15,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:22:15,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:22:15,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:22:15,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:22:15,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:22:15,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:22:15,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:22:15,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:22:15,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:22:15,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:22:15,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:22:15,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:22:15,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:22:15,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:22:15,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:22:15,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:22:15,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:22:15,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:22:15,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:22:15,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:22:15,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:22:15,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:22:15,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:22:15,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:22:15,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:22:15,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:22:15,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:22:15,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:22:15,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 18:22:15,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:22:15,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:22:15,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:22:15,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:22:15,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:22:15,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:22:15,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:22:15,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:22:15,767 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:22:15,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:22:15,768 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:22:15,768 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:22:15,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:22:15,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:22:15,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:22:15,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:22:15,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:22:15,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:22:15,770 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:22:15,770 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:22:15,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:22:15,770 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:22:15,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:22:15,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:22:15,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:22:15,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:22:15,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:15,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:22:15,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:22:15,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:22:15,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:22:15,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:22:15,773 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:22:15,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:22:15,774 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:22:15,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:22:15,775 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c [2022-11-25 18:22:16,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:22:16,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:22:16,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:22:16,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:22:16,095 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:22:16,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-11-25 18:22:19,186 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:22:19,462 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:22:19,463 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-11-25 18:22:19,470 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/data/0da6348c6/58270ee683944ef4ad6d15578eea4ba8/FLAG17be6d574 [2022-11-25 18:22:19,487 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/data/0da6348c6/58270ee683944ef4ad6d15578eea4ba8 [2022-11-25 18:22:19,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:22:19,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:22:19,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:19,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:22:19,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:22:19,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6beaf583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19, skipping insertion in model container [2022-11-25 18:22:19,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:22:19,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:22:19,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,732 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-11-25 18:22:19,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:19,752 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:22:19,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:22:19,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:22:19,789 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-11-25 18:22:19,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:19,809 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:22:19,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19 WrapperNode [2022-11-25 18:22:19,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:19,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:22:19,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:22:19,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:22:19,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,869 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 241 [2022-11-25 18:22:19,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:22:19,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:22:19,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:22:19,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:22:19,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,898 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:22:19,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:22:19,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:22:19,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:22:19,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (1/1) ... [2022-11-25 18:22:19,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:19,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:22:19,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:22:19,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:22:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:22:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:22:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:22:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:22:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:22:19,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:22:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:22:19,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:22:19,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:22:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:22:19,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:22:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:22:19,998 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:22:20,120 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:22:20,123 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:22:20,645 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:22:20,743 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:22:20,744 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:22:20,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:20 BoogieIcfgContainer [2022-11-25 18:22:20,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:22:20,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:22:20,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:22:20,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:22:20,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:22:19" (1/3) ... [2022-11-25 18:22:20,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2035641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:20, skipping insertion in model container [2022-11-25 18:22:20,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:19" (2/3) ... [2022-11-25 18:22:20,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2035641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:20, skipping insertion in model container [2022-11-25 18:22:20,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:20" (3/3) ... [2022-11-25 18:22:20,762 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-11-25 18:22:20,776 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:22:20,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:22:20,788 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 18:22:20,788 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:22:20,857 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:22:20,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 193 transitions, 410 flow [2022-11-25 18:22:20,982 INFO L130 PetriNetUnfolder]: 7/190 cut-off events. [2022-11-25 18:22:20,983 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:22:20,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 190 events. 7/190 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2022-11-25 18:22:20,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 193 transitions, 410 flow [2022-11-25 18:22:21,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 166 transitions, 344 flow [2022-11-25 18:22:21,009 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:22:21,037 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 166 transitions, 344 flow [2022-11-25 18:22:21,040 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 166 transitions, 344 flow [2022-11-25 18:22:21,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 166 transitions, 344 flow [2022-11-25 18:22:21,080 INFO L130 PetriNetUnfolder]: 6/166 cut-off events. [2022-11-25 18:22:21,080 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:22:21,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 166 events. 6/166 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2022-11-25 18:22:21,083 INFO L119 LiptonReduction]: Number of co-enabled transitions 1488 [2022-11-25 18:22:29,025 INFO L134 LiptonReduction]: Checked pairs total: 6603 [2022-11-25 18:22:29,026 INFO L136 LiptonReduction]: Total number of compositions: 163 [2022-11-25 18:22:29,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:22:29,049 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1aab5ff7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:22:29,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-25 18:22:29,052 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:22:29,052 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:22:29,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:29,053 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:22:29,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:22:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:29,060 INFO L85 PathProgramCache]: Analyzing trace with hash 25494, now seen corresponding path program 1 times [2022-11-25 18:22:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:22:29,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134668146] [2022-11-25 18:22:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:22:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:29,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:29,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134668146] [2022-11-25 18:22:29,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134668146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:29,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:29,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:22:29,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601920299] [2022-11-25 18:22:29,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:29,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:22:29,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:22:29,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:22:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:22:29,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 356 [2022-11-25 18:22:29,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:29,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:29,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 356 [2022-11-25 18:22:29,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:30,198 INFO L130 PetriNetUnfolder]: 2311/3767 cut-off events. [2022-11-25 18:22:30,202 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-11-25 18:22:30,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7893 conditions, 3767 events. 2311/3767 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19975 event pairs, 2310 based on Foata normal form. 0/3246 useless extension candidates. Maximal degree in co-relation 3721. Up to 1821 conditions per place. [2022-11-25 18:22:30,230 INFO L137 encePairwiseOnDemand]: 352/356 looper letters, 59 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2022-11-25 18:22:30,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 63 transitions, 272 flow [2022-11-25 18:22:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:22:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:22:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2022-11-25 18:22:30,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5140449438202247 [2022-11-25 18:22:30,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2022-11-25 18:22:30,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2022-11-25 18:22:30,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:30,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2022-11-25 18:22:30,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:30,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:30,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:30,283 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 80 flow. Second operand 3 states and 549 transitions. [2022-11-25 18:22:30,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 63 transitions, 272 flow [2022-11-25 18:22:30,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 260 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:22:30,298 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 88 flow [2022-11-25 18:22:30,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2022-11-25 18:22:30,306 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2022-11-25 18:22:30,307 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 88 flow [2022-11-25 18:22:30,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:30,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:30,308 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:22:30,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:22:30,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:22:30,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash 792124, now seen corresponding path program 1 times [2022-11-25 18:22:30,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:22:30,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658699732] [2022-11-25 18:22:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:30,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:22:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:30,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:30,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658699732] [2022-11-25 18:22:30,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658699732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:22:30,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323211321] [2022-11-25 18:22:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:30,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:22:30,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:22:30,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:22:30,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:22:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:30,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:22:30,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:30,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:22:30,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323211321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:30,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:22:30,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 18:22:30,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871040978] [2022-11-25 18:22:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:30,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:22:30,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:22:30,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:22:30,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:22:30,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 356 [2022-11-25 18:22:30,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:30,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:30,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 356 [2022-11-25 18:22:30,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:31,201 INFO L130 PetriNetUnfolder]: 2311/3766 cut-off events. [2022-11-25 18:22:31,202 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 18:22:31,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 3766 events. 2311/3766 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19987 event pairs, 2310 based on Foata normal form. 0/3248 useless extension candidates. Maximal degree in co-relation 3924. Up to 1819 conditions per place. [2022-11-25 18:22:31,219 INFO L137 encePairwiseOnDemand]: 353/356 looper letters, 58 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2022-11-25 18:22:31,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 62 transitions, 266 flow [2022-11-25 18:22:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:22:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:22:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 709 transitions. [2022-11-25 18:22:31,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4978932584269663 [2022-11-25 18:22:31,222 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 709 transitions. [2022-11-25 18:22:31,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 709 transitions. [2022-11-25 18:22:31,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:31,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 709 transitions. [2022-11-25 18:22:31,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:31,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:31,229 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:31,229 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 88 flow. Second operand 4 states and 709 transitions. [2022-11-25 18:22:31,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 62 transitions, 266 flow [2022-11-25 18:22:31,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:22:31,231 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 86 flow [2022-11-25 18:22:31,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2022-11-25 18:22:31,233 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2022-11-25 18:22:31,233 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 86 flow [2022-11-25 18:22:31,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:31,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:31,234 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:22:31,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:22:31,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 18:22:31,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:22:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:31,441 INFO L85 PathProgramCache]: Analyzing trace with hash 792141, now seen corresponding path program 1 times [2022-11-25 18:22:31,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:22:31,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390554493] [2022-11-25 18:22:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:22:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:31,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:31,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390554493] [2022-11-25 18:22:31,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390554493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:22:31,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118050255] [2022-11-25 18:22:31,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:31,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:22:31,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:22:31,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:22:31,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:22:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:31,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:22:31,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:31,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:22:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:31,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118050255] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:22:31,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:22:31,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 18:22:31,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913228865] [2022-11-25 18:22:31,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:22:31,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:22:31,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:22:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:22:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:22:31,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 356 [2022-11-25 18:22:31,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:31,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:31,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 356 [2022-11-25 18:22:31,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:32,945 INFO L130 PetriNetUnfolder]: 5776/9412 cut-off events. [2022-11-25 18:22:32,945 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-25 18:22:32,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19617 conditions, 9412 events. 5776/9412 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 59283 event pairs, 5775 based on Foata normal form. 0/8138 useless extension candidates. Maximal degree in co-relation 15687. Up to 1820 conditions per place. [2022-11-25 18:22:32,993 INFO L137 encePairwiseOnDemand]: 353/356 looper letters, 142 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2022-11-25 18:22:32,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 149 transitions, 640 flow [2022-11-25 18:22:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:22:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:22:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1122 transitions. [2022-11-25 18:22:32,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5252808988764045 [2022-11-25 18:22:32,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1122 transitions. [2022-11-25 18:22:32,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1122 transitions. [2022-11-25 18:22:32,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:32,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1122 transitions. [2022-11-25 18:22:33,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:33,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:33,007 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:33,007 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 86 flow. Second operand 6 states and 1122 transitions. [2022-11-25 18:22:33,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 149 transitions, 640 flow [2022-11-25 18:22:33,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 149 transitions, 637 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:22:33,012 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 119 flow [2022-11-25 18:22:33,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2022-11-25 18:22:33,013 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2022-11-25 18:22:33,013 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 119 flow [2022-11-25 18:22:33,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:33,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:33,015 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:22:33,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:22:33,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:22:33,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:22:33,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash 24558425, now seen corresponding path program 1 times [2022-11-25 18:22:33,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:22:33,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405333696] [2022-11-25 18:22:33,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:33,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:22:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:33,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:33,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405333696] [2022-11-25 18:22:33,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405333696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:33,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:33,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:22:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825954318] [2022-11-25 18:22:33,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:33,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:22:33,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:22:33,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:22:33,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:22:33,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 356 [2022-11-25 18:22:33,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:33,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:33,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 356 [2022-11-25 18:22:33,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:34,306 INFO L130 PetriNetUnfolder]: 5216/8672 cut-off events. [2022-11-25 18:22:34,307 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-25 18:22:34,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17971 conditions, 8672 events. 5216/8672 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 56921 event pairs, 2515 based on Foata normal form. 0/7802 useless extension candidates. Maximal degree in co-relation 14369. Up to 4541 conditions per place. [2022-11-25 18:22:34,339 INFO L137 encePairwiseOnDemand]: 351/356 looper letters, 36 selfloop transitions, 3 changer transitions 9/50 dead transitions. [2022-11-25 18:22:34,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 244 flow [2022-11-25 18:22:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:22:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:22:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2022-11-25 18:22:34,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49812734082397003 [2022-11-25 18:22:34,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2022-11-25 18:22:34,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2022-11-25 18:22:34,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:34,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2022-11-25 18:22:34,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:34,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:34,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:34,347 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 119 flow. Second operand 3 states and 532 transitions. [2022-11-25 18:22:34,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 244 flow [2022-11-25 18:22:34,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 236 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 18:22:34,350 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 124 flow [2022-11-25 18:22:34,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2022-11-25 18:22:34,351 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2022-11-25 18:22:34,351 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 124 flow [2022-11-25 18:22:34,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:34,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:34,352 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:22:34,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:22:34,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:22:34,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2125867759, now seen corresponding path program 1 times [2022-11-25 18:22:34,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:22:34,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094813006] [2022-11-25 18:22:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:34,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:22:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:34,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:34,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094813006] [2022-11-25 18:22:34,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094813006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:34,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:34,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:22:34,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929775812] [2022-11-25 18:22:34,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:34,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:22:34,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:22:34,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:22:34,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:22:34,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 356 [2022-11-25 18:22:34,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:34,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:34,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 356 [2022-11-25 18:22:34,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:35,241 INFO L130 PetriNetUnfolder]: 4876/8207 cut-off events. [2022-11-25 18:22:35,241 INFO L131 PetriNetUnfolder]: For 1118/1118 co-relation queries the response was YES. [2022-11-25 18:22:35,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18145 conditions, 8207 events. 4876/8207 cut-off events. For 1118/1118 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 55210 event pairs, 2275 based on Foata normal form. 0/7697 useless extension candidates. Maximal degree in co-relation 14506. Up to 4391 conditions per place. [2022-11-25 18:22:35,275 INFO L137 encePairwiseOnDemand]: 351/356 looper letters, 38 selfloop transitions, 3 changer transitions 7/50 dead transitions. [2022-11-25 18:22:35,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 256 flow [2022-11-25 18:22:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:22:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:22:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2022-11-25 18:22:35,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49812734082397003 [2022-11-25 18:22:35,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2022-11-25 18:22:35,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2022-11-25 18:22:35,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:35,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2022-11-25 18:22:35,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:35,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:35,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:35,365 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 124 flow. Second operand 3 states and 532 transitions. [2022-11-25 18:22:35,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 256 flow [2022-11-25 18:22:35,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:22:35,373 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 131 flow [2022-11-25 18:22:35,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2022-11-25 18:22:35,376 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2022-11-25 18:22:35,376 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 131 flow [2022-11-25 18:22:35,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:35,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:35,377 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 18:22:35,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:22:35,378 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:22:35,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:35,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2125126951, now seen corresponding path program 2 times [2022-11-25 18:22:35,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:22:35,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518989961] [2022-11-25 18:22:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:35,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:22:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:35,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:35,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518989961] [2022-11-25 18:22:35,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518989961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:22:35,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202266741] [2022-11-25 18:22:35,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:22:35,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:22:35,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:22:35,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:22:35,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:22:35,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:22:35,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:22:35,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:22:35,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:22:35,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:22:35,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202266741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:35,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:22:35,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 18:22:35,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677572043] [2022-11-25 18:22:35,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:35,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:22:35,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:22:35,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:22:35,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:22:35,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 356 [2022-11-25 18:22:35,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:35,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:35,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 356 [2022-11-25 18:22:35,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:36,586 INFO L130 PetriNetUnfolder]: 4876/8101 cut-off events. [2022-11-25 18:22:36,587 INFO L131 PetriNetUnfolder]: For 998/998 co-relation queries the response was YES. [2022-11-25 18:22:36,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18565 conditions, 8101 events. 4876/8101 cut-off events. For 998/998 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 51993 event pairs, 4875 based on Foata normal form. 1/7727 useless extension candidates. Maximal degree in co-relation 14840. Up to 7806 conditions per place. [2022-11-25 18:22:36,623 INFO L137 encePairwiseOnDemand]: 354/356 looper letters, 33 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-11-25 18:22:36,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 36 transitions, 189 flow [2022-11-25 18:22:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:22:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:22:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-11-25 18:22:36,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4868913857677903 [2022-11-25 18:22:36,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-11-25 18:22:36,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-11-25 18:22:36,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:36,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-11-25 18:22:36,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:36,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:36,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:36,631 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 131 flow. Second operand 3 states and 520 transitions. [2022-11-25 18:22:36,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 36 transitions, 189 flow [2022-11-25 18:22:36,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 36 transitions, 173 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-25 18:22:36,644 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 107 flow [2022-11-25 18:22:36,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2022-11-25 18:22:36,647 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2022-11-25 18:22:36,648 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 107 flow [2022-11-25 18:22:36,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:36,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:36,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:22:36,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:22:36,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:22:36,854 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:22:36,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1442949512, now seen corresponding path program 1 times [2022-11-25 18:22:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:22:36,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631787259] [2022-11-25 18:22:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:36,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:22:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:36,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:36,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631787259] [2022-11-25 18:22:36,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631787259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:36,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:36,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:22:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59476365] [2022-11-25 18:22:36,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:36,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:22:36,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:22:36,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:22:36,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:22:36,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 356 [2022-11-25 18:22:36,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:36,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:36,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 356 [2022-11-25 18:22:36,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:38,297 INFO L130 PetriNetUnfolder]: 6856/11536 cut-off events. [2022-11-25 18:22:38,297 INFO L131 PetriNetUnfolder]: For 555/555 co-relation queries the response was YES. [2022-11-25 18:22:38,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24981 conditions, 11536 events. 6856/11536 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 81653 event pairs, 1625 based on Foata normal form. 0/11326 useless extension candidates. Maximal degree in co-relation 24971. Up to 4311 conditions per place. [2022-11-25 18:22:38,330 INFO L137 encePairwiseOnDemand]: 349/356 looper letters, 43 selfloop transitions, 6 changer transitions 47/98 dead transitions. [2022-11-25 18:22:38,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 448 flow [2022-11-25 18:22:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:22:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:22:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1178 transitions. [2022-11-25 18:22:38,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4727126805778491 [2022-11-25 18:22:38,334 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1178 transitions. [2022-11-25 18:22:38,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1178 transitions. [2022-11-25 18:22:38,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:38,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1178 transitions. [2022-11-25 18:22:38,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.28571428571428) internal successors, (1178), 7 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:38,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 356.0) internal successors, (2848), 8 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:38,343 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 356.0) internal successors, (2848), 8 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:38,343 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 107 flow. Second operand 7 states and 1178 transitions. [2022-11-25 18:22:38,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 448 flow [2022-11-25 18:22:38,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 98 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:22:38,346 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 114 flow [2022-11-25 18:22:38,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=114, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2022-11-25 18:22:38,346 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2022-11-25 18:22:38,347 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 114 flow [2022-11-25 18:22:38,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:38,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:38,347 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:22:38,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:22:38,348 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:22:38,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:38,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1445515381, now seen corresponding path program 1 times [2022-11-25 18:22:38,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:22:38,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211129691] [2022-11-25 18:22:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:38,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:22:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:38,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:38,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211129691] [2022-11-25 18:22:38,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211129691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:38,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:38,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:22:38,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918857518] [2022-11-25 18:22:38,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:38,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:22:38,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:22:38,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:22:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:22:38,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 356 [2022-11-25 18:22:38,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:38,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:38,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 356 [2022-11-25 18:22:38,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:38,799 INFO L130 PetriNetUnfolder]: 1776/3346 cut-off events. [2022-11-25 18:22:38,799 INFO L131 PetriNetUnfolder]: For 540/540 co-relation queries the response was YES. [2022-11-25 18:22:38,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7862 conditions, 3346 events. 1776/3346 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 21344 event pairs, 365 based on Foata normal form. 150/3346 useless extension candidates. Maximal degree in co-relation 7851. Up to 1720 conditions per place. [2022-11-25 18:22:38,813 INFO L137 encePairwiseOnDemand]: 351/356 looper letters, 24 selfloop transitions, 3 changer transitions 17/45 dead transitions. [2022-11-25 18:22:38,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 224 flow [2022-11-25 18:22:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:22:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:22:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 815 transitions. [2022-11-25 18:22:38,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45786516853932585 [2022-11-25 18:22:38,816 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 815 transitions. [2022-11-25 18:22:38,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 815 transitions. [2022-11-25 18:22:38,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:38,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 815 transitions. [2022-11-25 18:22:38,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:38,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:38,822 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:38,823 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 114 flow. Second operand 5 states and 815 transitions. [2022-11-25 18:22:38,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 224 flow [2022-11-25 18:22:38,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 213 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:22:38,828 INFO L231 Difference]: Finished difference. Result has 48 places, 24 transitions, 83 flow [2022-11-25 18:22:38,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=48, PETRI_TRANSITIONS=24} [2022-11-25 18:22:38,831 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2022-11-25 18:22:38,831 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 24 transitions, 83 flow [2022-11-25 18:22:38,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:38,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:38,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:22:38,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:22:38,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:22:38,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:38,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1445555859, now seen corresponding path program 1 times [2022-11-25 18:22:38,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:22:38,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088867369] [2022-11-25 18:22:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:38,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:22:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:38,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:38,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088867369] [2022-11-25 18:22:38,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088867369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:38,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:38,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:22:38,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338394693] [2022-11-25 18:22:38,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:38,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:22:38,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:22:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:22:38,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:22:38,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 356 [2022-11-25 18:22:38,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 24 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:38,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:38,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 356 [2022-11-25 18:22:38,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:39,156 INFO L130 PetriNetUnfolder]: 516/1016 cut-off events. [2022-11-25 18:22:39,156 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-11-25 18:22:39,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 1016 events. 516/1016 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5405 event pairs, 125 based on Foata normal form. 0/1016 useless extension candidates. Maximal degree in co-relation 2461. Up to 900 conditions per place. [2022-11-25 18:22:39,162 INFO L137 encePairwiseOnDemand]: 353/356 looper letters, 24 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2022-11-25 18:22:39,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 141 flow [2022-11-25 18:22:39,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:22:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:22:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2022-11-25 18:22:39,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4515449438202247 [2022-11-25 18:22:39,166 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2022-11-25 18:22:39,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2022-11-25 18:22:39,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:39,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2022-11-25 18:22:39,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:39,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:39,174 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:39,175 INFO L175 Difference]: Start difference. First operand has 48 places, 24 transitions, 83 flow. Second operand 4 states and 643 transitions. [2022-11-25 18:22:39,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 141 flow [2022-11-25 18:22:39,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 132 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:22:39,177 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2022-11-25 18:22:39,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2022-11-25 18:22:39,179 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2022-11-25 18:22:39,179 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2022-11-25 18:22:39,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:39,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:39,180 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:22:39,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:22:39,181 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:22:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:39,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1445555860, now seen corresponding path program 1 times [2022-11-25 18:22:39,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:22:39,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879619298] [2022-11-25 18:22:39,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:39,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:22:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:39,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:39,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879619298] [2022-11-25 18:22:39,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879619298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:39,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:39,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:22:39,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418404223] [2022-11-25 18:22:39,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:39,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:22:39,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:22:39,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:22:39,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:22:39,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 356 [2022-11-25 18:22:39,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:39,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:39,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 356 [2022-11-25 18:22:39,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:39,440 INFO L130 PetriNetUnfolder]: 216/506 cut-off events. [2022-11-25 18:22:39,440 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2022-11-25 18:22:39,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 506 events. 216/506 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2516 event pairs, 5 based on Foata normal form. 150/656 useless extension candidates. Maximal degree in co-relation 1141. Up to 300 conditions per place. [2022-11-25 18:22:39,442 INFO L137 encePairwiseOnDemand]: 351/356 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2022-11-25 18:22:39,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 148 flow [2022-11-25 18:22:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:22:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:22:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 801 transitions. [2022-11-25 18:22:39,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45 [2022-11-25 18:22:39,446 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 801 transitions. [2022-11-25 18:22:39,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 801 transitions. [2022-11-25 18:22:39,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:39,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 801 transitions. [2022-11-25 18:22:39,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:39,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:39,454 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:39,454 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 5 states and 801 transitions. [2022-11-25 18:22:39,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 148 flow [2022-11-25 18:22:39,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 142 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:22:39,456 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2022-11-25 18:22:39,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2022-11-25 18:22:39,457 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2022-11-25 18:22:39,458 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2022-11-25 18:22:39,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:39,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-11-25 18:22:39,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-25 18:22:39,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-25 18:22:39,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-25 18:22:39,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-25 18:22:39,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-25 18:22:39,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-11-25 18:22:39,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-11-25 18:22:39,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-11-25 18:22:39,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-25 18:22:39,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-25 18:22:39,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-25 18:22:39,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-25 18:22:39,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:22:39,469 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:22:39,476 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:22:39,477 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:22:39,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:22:39 BasicIcfg [2022-11-25 18:22:39,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:22:39,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:22:39,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:22:39,482 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:22:39,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:20" (3/4) ... [2022-11-25 18:22:39,486 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:22:39,491 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 18:22:39,491 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 18:22:39,491 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 18:22:39,497 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-25 18:22:39,498 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 18:22:39,498 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 18:22:39,499 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:22:39,552 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:22:39,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:22:39,553 INFO L158 Benchmark]: Toolchain (without parser) took 20061.25ms. Allocated memory was 136.3MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 102.9MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 297.5MB. Max. memory is 16.1GB. [2022-11-25 18:22:39,553 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:22:39,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.33ms. Allocated memory is still 136.3MB. Free memory was 102.9MB in the beginning and 85.8MB in the end (delta: 17.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 18:22:39,554 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.41ms. Allocated memory is still 136.3MB. Free memory was 85.8MB in the beginning and 83.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:22:39,554 INFO L158 Benchmark]: Boogie Preprocessor took 32.49ms. Allocated memory is still 136.3MB. Free memory was 83.5MB in the beginning and 81.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:22:39,555 INFO L158 Benchmark]: RCFGBuilder took 843.09ms. Allocated memory was 136.3MB in the beginning and 169.9MB in the end (delta: 33.6MB). Free memory was 81.8MB in the beginning and 127.9MB in the end (delta: -46.1MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2022-11-25 18:22:39,555 INFO L158 Benchmark]: TraceAbstraction took 18732.18ms. Allocated memory was 169.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 126.8MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 281.7MB. Max. memory is 16.1GB. [2022-11-25 18:22:39,556 INFO L158 Benchmark]: Witness Printer took 70.42ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:22:39,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.33ms. Allocated memory is still 136.3MB. Free memory was 102.9MB in the beginning and 85.8MB in the end (delta: 17.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.41ms. Allocated memory is still 136.3MB. Free memory was 85.8MB in the beginning and 83.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.49ms. Allocated memory is still 136.3MB. Free memory was 83.5MB in the beginning and 81.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 843.09ms. Allocated memory was 136.3MB in the beginning and 169.9MB in the end (delta: 33.6MB). Free memory was 81.8MB in the beginning and 127.9MB in the end (delta: -46.1MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * TraceAbstraction took 18732.18ms. Allocated memory was 169.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 126.8MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 281.7MB. Max. memory is 16.1GB. * Witness Printer took 70.42ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0s, 170 PlacesBefore, 43 PlacesAfterwards, 166 TransitionsBefore, 34 TransitionsAfterwards, 1488 CoEnabledTransitionPairs, 8 FixpointIterations, 108 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 0 ConcurrentYvCompositions, 5 ChoiceCompositions, 163 TotalNumberOfCompositions, 6603 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3464, independent: 3184, independent conditional: 0, independent unconditional: 3184, dependent: 280, dependent conditional: 0, dependent unconditional: 280, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1102, independent: 1047, independent conditional: 0, independent unconditional: 1047, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1102, independent: 1038, independent conditional: 0, independent unconditional: 1038, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 64, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 198, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3464, independent: 2137, independent conditional: 0, independent unconditional: 2137, dependent: 225, dependent conditional: 0, dependent unconditional: 225, unknown: 1102, unknown conditional: 0, unknown unconditional: 1102] , Statistics on independence cache: Total cache size (in pairs): 273, Positive cache size: 245, Positive conditional cache size: 0, Positive unconditional cache size: 245, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 171]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 171]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 226 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.6s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 701 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 622 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 914 IncrementalHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 38 mSDtfsCounter, 914 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=5, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 68 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 2 NumberOfNonLiveVariables, 379 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 11/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 18:22:39,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebf3797-96ff-4ad0-9b3d-423f4ab0b12d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE